SDMX Transform - Finish Supply & Use Tables Proto (Finalise Initial Interface / Signature with Fran / Mike)

[MartynBSpooner]

Description:

Finialise the local build and execution of the SDMX to CSVW transform of the Supply and Use Tables data.
Standard output of .csv structured data and associated meta file.

Location - dp-data-pipelines/shared/transforms/sdmx/v1.py

`def sdmx_transform_v1(sdmx: Path) -> Tuple[Path, Path]:
    """
    Taking a Path to an sdmx file, create a csv and a json
    metadata file and return paths to them.

    return: csv_path, metadata_path
    """
    ...`

Acceptance Criteria:

• End to end of the transform completed with CSVW outputs.
• Documented process in-line-code, Doc-strings and Confluence.